Table 1.

Physical and chemical properties of the TiO₂ samples investigated.

	TiO2-FG	TiO2-NM1 c	TiO2–NM2 d
Specific surface area (m2/g)	9 ± 0.45 a	316.07 ± 15.80	35–65
Primary particle size (nm)	10–350 b	5–6	70 (mean)
Aggregate size (nm)	-	10–170	-
Crystalline phase	Anatase (>99%)	Anatase (98.1%)	Anatase (85%); Rutile (15%)
Impurities	-	Al, Na, P, S	<0.5%

^a Brunauer–Emmett–Teller (BET) method, this study, ^b Reference [7], ^c Reference [29], ^d as declared by the Company.